[1821] - Effects of horizontal grid resolution on evapotranspiration partitioning using TerrSysMP

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Citation
Shrestha, P., Sulis, M., Simmer, C., Kollet, S., 2018. Effects of horizontal grid resolution on evapotranspiration partitioning using TerrSysMP. Journal of Hydrology, 557, 910 - 915. DOI: 10.1016/j.jhydrol.2018.01.024.
Identification
Title(s):Main Title: Effects of horizontal grid resolution on evapotranspiration partitioning using TerrSysMP
Description(s):Abstract: Biotic leaf transpiration (T) and abiotic evaporation (E) are the two major pathways by which water is transferred from land surfaces to the atmosphere. Earth system models simulating the terrestrial water, carbon and energy cycle are required to reliably embed the role of soil and vegetation processes in order to realistically reproduce both fluxes including their relative contributions to total evapotranspiration(ET). Earth system models are also being used with increasing spatial resolutions to better simulate the effects of surface heterogeneity on the regional water and energy cycle and to realistically include effects of subsurface lateral flow paths, which are expected to feed back on the exchange fluxes and their partitioning in the model. Using the hydrological component of the Terrestrial Systems Modeling Platform (TerrSysMP), we examine the uncertainty in the estimates of T/ET ratio due to horizontal model grid resolution for a dry and wet year in the Inde catchment (western Germany). The aggregation of topography results in smoothing of slope magnitudes and the filtering of small-scale convergence and divergence zones, which directly impacts the surface-subsurface flow. Coarsening of the grid resolution from 120 m to 960 m increased the available soil moisture for ground evaporation, and decreased T/ET ratio by about 5% and 8% for dry and wet year respectively. The change in T/ET ratio was more pronounced for agricultural crops compared to forested areas, indicating a strong local control of vegetation on the ground evaporation,affecting the domain average statistics.
Identifier(s):DOI: 10.1016/j.jhydrol.2018.01.024
Citation Advice:Shrestha, P., Sulis, M., Simmer, C., & Kollet, S. (2018). Effects of horizontal grid resolution on evapotranspiration partitioning using TerrSysMP. Journal of Hydrology, 557, 910-915.
Responsible Party
Creator(s):Author: Prabhakar Shrestha
Author: Mauro Sulis
Author: Clemens Simmer
Author: Stefan Kollet
Publisher:Elsevier
Topic
TR32 Topic:Vegetation
Related Sub-project(s):Z4
Subject(s):CRC/TR32 Keywords: Modelling
File Details
File Name:Shrestha_etal_2018.pdf
Data Type:Text
File Size:1192 kB (1.164 MB)
Date(s):Date Accepted: 2018-01-09
Mime Type:application/pdf
Language:English
Status:Completed
Constraints
Download Permission:Free
General Access and Use Conditions:According to the TR32DB data policy agreement.
Access Limitations:According to the TR32DB data policy agreement.
Geographic
North:50.88741
East:6.52962
South:50.53958
West:5.98030
Measurement Region:NorthRhine-Westphalia
Measurement Location:--NorthRhine-Westphalia--
Specific Informations - Publication
Status:Published
Review:PeerReview
Year:2018
Type:Article
Article Type:Journal
Source:Journal of Hydrology
Volume:557
Page Range:910 - 915
Metadata Details
Metadata Creator:Prabhakar Shrestha
Metadata Created:2018-09-07
Metadata Last Updated:2018-09-07
Subproject:Z4
Funding Phase:3
Metadata Language:English
Metadata Version:V43
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